①而且这种现象越来越低龄化

②但是互联网时代，汉字却陷入有声无形的窘境

③汉字承载了中华民族的文明和智慧

④专家学者认为：汉字对智力的开发有巨大作用；认识的汉字越多，联想就越丰富

⑤其兼备象形和表意的特点及蕴含的思想和文化内涵是任何科技也无法模拟和取代的

⑥现在越来越多的人出现提笔忘字的现象

使用多用电表测量电阻时，多用电表内部的电路可以等效为一个直流电源（一般为电池）、一个电阻和一表头相串联，两个表笔分别位于此串联电路的两端．现需要测量多用电表内电池的电动势，给定的器材有：待测多用电表，量程为60mA的电流表，电阻箱，导线若干．实验时，将多用电表调至×1Ω挡，调好零点；电阻箱置于适当数值．完成下列填空：

①仪器连线如图1所示（a和b是多用电表的两个表笔）．若两电表均正常工作，则表笔a为____ （填“红”或“黑”）色；

②若适当调节电阻箱后，图1中多用电表、电流表与电阻箱的示数分别如图2（a），（b），（c）所示，则多用电表的读数为____Ω．电流表的读数为____mA，电阻箱的读数为____Ω：

③将图l中多用电表的两表笔短接，此时流过多用电表的电流为____mA；（保留3位有效数字）

④计算得到多用电表内电池的电动势为____V．（保留3位有效数字）

图为在某居民小区中随机调查的10户家庭一年的月均用水量（单位：t）的条形统计图，则这10户家庭月均用水量的众数和中位数分别是（   ）

阅读理解

      Opened in 1883, the Brooklyn Bridge was the first long－span bridge to carry motor traffic, and it quickly became the model for the great suspension bridges of the following century. Spanning New York's East River, it provided the first traffic artery between Manhattan Island and Brooklyn. Before that, the only transportation was by ferries, which were slow and could be dangerous in winter.

      The construction of a bridge over the East River had been discussed since the early 19th century, but the outbreak of the Civil War in 1861 deflected all consideration of the project. When the war ended in 1865, the bridge became an important issue once more. In 1867, the New York State passed an act setting up the New York Bridge Company for the purpose of constructing a bridge between Manhattan Island and Brooklyn.

      John Augustus Roebling was chosen to design the bridge. Born in Germany in 1806, he held aggressive views as a student and was listed by the German police as a dangerous figure. He emigrated to America in 1830 to escape political discrimination.

      Roebling proposed a bridge with a span of 1,500 feet (465 m), with two towers in the East River serving as the main piers. The bridge that was actually built is longer—1,597 feet (486 m), the longest suspension bridge at that time.